144 0001988867 XXXXXXXX LIVE 0001703056 ADT Inc. 001-38352 1501 Yamato Road Boca Raton FL 33431 561-988-3600 Prime Security Services TopCo (ML), L.P. 10% stockholder Common stock, par value $0.01 per share BTIG LLC

65 E 55th Street New York NY 10022

46722504 389198458.00 781765950 05/12/2025 NYSE Common stock, par value $0.01 per share 05/02/2016 Merger transaction ADT Inc. N 582326416 05/02/2016 Cash N Prime Security Services TopCo (ML), L.P.

100 West Putnam Avenue Greenwich CT 06830

Common stock, par value $0.01 per share 03/04/2025 65411506 498435676.00 Prime Security Services TopCo (ML), L.P.

100 West Putnam Avenue Greenwich CT 06830

Common stock, par value $0.01 per share 03/11/2025 9811726 74765352.00 Prime Security Services TopCo (ML II), L.P.

100 West Putnam Avenue Greenwich CT 06830

Common stock, par value $0.01 per share 03/04/2025 4588494 34964324.00 Prime Security Services TopCo (ML II), L.P.

100 West Putnam Avenue Greenwich CT 06830

Common stock, par value $0.01 per share 03/11/2025 688274 5244648.00 Prime Security Services TopCo (ML II), L.P.

100 West Putnam Avenue Greenwich CT 06830

Common stock, par value $0.01 per share 05/12/2025 3277496 27301542.00 80,500,000 of the securities reported above that were sold in the past 3 months were sold in a registered offering pursuant to an effective registration statement and therefore are excluded pursuant to Rule 144(e)(3)(vii)(A) from the determination of the amount of securities permitted to be sold in reliance on Rule 144. 05/12/2025 /s/ James Elworth, Authorized Signatory